// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_BROWSER_ANDROID_JAVA_JAVA_METHOD_H_
#define CONTENT_BROWSER_ANDROID_JAVA_JAVA_METHOD_H_

#include <jni.h>
#include <stddef.h>
#include <string>
#include <vector>

#include "base/android/scoped_java_ref.h"
#include "base/macros.h"
#include "content/browser/android/java/java_type.h"
#include "content/common/content_export.h"

namespace content {

// Wrapper around java.lang.reflect.Method. This class must be used on a single
// thread only.
class CONTENT_EXPORT JavaMethod {
public:
    explicit JavaMethod(const base::android::JavaRef<jobject>& method);
    ~JavaMethod();

    const std::string& name() const { return name_; }
    size_t num_parameters() const;
    bool is_static() const;
    const JavaType& parameter_type(size_t index) const;
    const JavaType& return_type() const;
    jmethodID id() const;

private:
    void EnsureNumParametersIsSetUp() const;
    void EnsureTypesAndIDAreSetUp() const;

    std::string name_;
    mutable base::android::ScopedJavaGlobalRef<jobject> java_method_;
    mutable bool have_calculated_num_parameters_;
    mutable size_t num_parameters_;
    mutable std::vector<JavaType> parameter_types_;
    mutable JavaType return_type_;
    mutable bool is_static_;
    mutable jmethodID id_;

    DISALLOW_IMPLICIT_CONSTRUCTORS(JavaMethod);
};

} // namespace content

#endif // CONTENT_BROWSER_ANDROID_JAVA_JAVA_METHOD_H_
